/**
 * Get the user agent string for the current environment.
 *
 * @exapmle
 * ```
 * getUserAgent({ name: 'my-cli', version: '1.0.0' });
 * // 'hostname @ my-cli 1.0.0 node-v18.16.0 linux (x64)'
 * ```
 */
export declare function getUserAgent(pkg: {
    name: string;
    version: string;
}): string;